In an interview with “Nightly News” anchor Brian Williams, Edward Snowden states that he was “trained as a spy” and offered his expertise to the U.S. government. (Photo/Video: NBC News)

This transcript has been automatically generated and may not be 100% accurate.

I ... the it's no secret ... in the U S stands to get more into it so it's ... out of computers now extended to other people ... um ... I was trained as a spider's for the traditional sense of the word in that I'd lived and worked ... undercover ... overseas ... pretending to work in a job that I'm ... and even being assigned a name that was the mom ... um ... but ... I in a technical specialists sign The technical expert ... a deal work with people I don't recruit ... agents ... what I do like put systems to work for the United States ... I don't at all levels from from the bottle on the ground ... all the way to the top ... now that the point in time these things in life remain in certain ways it's a whole will you know he's a low-level analysts ... well what they're trying to do ... is they're trying to use one positions an attack in Korea here or there to distract Michael Calia My expects ... which is that ... I've worked for the central told it's a it's an ... undercover overseas ... I've worked for the National Security Agency undercover overseas ... and I work for the Defense intelligence Agency as a lecturer at the joint Counterintelligence training Academy where I developed ... sources and methods for keeping our information people secure work ... in the most hostile and dangerous environments around the world ... so what makes them a